coreboot-kgpe-d16/payloads/coreinfo/util/kconfig/util.c

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Add a recent kconfig version to coreinfo, in order to make the supported features configurable later (currently unused). Store all build files and results (coreinfo.elf) in build/ now. I'm self-acking this as (though non-"trivial") it doesn't affect coreinfo in its functionality, this is more or less a "cosmetic" change to the build interface ("make" -> "make menuconfig && make"). This is a kconfig checkout from the Linux kernel (where kconfig is being actively maintained) from 03/2008. The hash identifying the last commit to kconfig is 587c90616a5b44e6ccfac38e64d4fecee51d588c. The amount of changes to kconfig itself has been kept as small as possible to keep the diff small and to ease updating/porting to newer kconfig versions. The following changes were performed on the upstream Linux kconfig: - s/kernel/coreinfo/, and s/Linux/coreinfo/ in various strings. - Consistently use the env. variable KERNELVERSION in all kconfig interfaces -- e.g. config/menuconfig/gconfig/xconfig -- as version number. - Hardcode our paths/filenames in some places (could be improved upstream). - Always write .config and build/config.h, no matter which kconfig interface is used (config/menuconfig/gconfig/xconfig). We want to include build/config.h in our code. - Adapt the kconfig Makefile for our purposes (build/ directory, rules, etc). In addition, a few items in the coreinfo Makefile are needed for this to work. This kconfig setup is successfully tested with all targets from 'make help': config - Update current config utilising a line-oriented program menuconfig - Update current config utilising a menu based program xconfig - Update current config utilising a QT based front-end gconfig - Update current config utilising a GTK based front-end oldconfig - Update current config utilising a provided .config as base silentoldconfig - Same as oldconfig, but quietly randconfig - New config with random answer to all options defconfig - New config with default answer to all options allmodconfig - New config selecting modules when possible allyesconfig - New config where all options are accepted with yes allnoconfig - New config where all options are answered with no For 'make defconfig' to work you have to do (which we don't need in coreinfo): $ mkdir configs; touch configs/defconfig You can also use 'make foo_defconfig' in which case kconfig will use a file called 'configs/foo_defconfig' as basis. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3188 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2008-03-24 16:47:49 +01:00
/*
* Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
* Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
*
* Released under the terms of the GNU GPL v2.0.
*/
#include <string.h>
#include "lkc.h"
/* file already present in list? If not add it */
struct file *file_lookup(const char *name)
{
struct file *file;
for (file = file_list; file; file = file->next) {
if (!strcmp(name, file->name))
return file;
}
file = malloc(sizeof(*file));
memset(file, 0, sizeof(*file));
file->name = strdup(name);
file->next = file_list;
file_list = file;
return file;
}
/* write a dependency file as used by kbuild to track dependencies */
int file_write_dep(const char *name)
{
struct symbol *sym, *env_sym;
struct expr *e;
struct file *file;
FILE *out;
if (!name)
name = ".kconfig.d";
out = fopen("..config.tmp", "w");
if (!out)
return 1;
fprintf(out, "deps_config := \\\n");
for (file = file_list; file; file = file->next) {
if (file->next)
fprintf(out, "\t%s \\\n", file->name);
else
fprintf(out, "\t%s\n", file->name);
}
fprintf(out, "\nbuild/auto.conf: \\\n"
"\t$(deps_config)\n\n");
expr_list_for_each_sym(sym_env_list, e, sym) {
struct property *prop;
const char *value;
prop = sym_get_env_prop(sym);
env_sym = prop_get_symbol(prop);
if (!env_sym)
continue;
value = getenv(env_sym->name);
if (!value)
value = "";
fprintf(out, "ifneq \"$(%s)\" \"%s\"\n", env_sym->name, value);
fprintf(out, "build/auto.conf: FORCE\n");
fprintf(out, "endif\n");
}
fprintf(out, "\n$(deps_config): ;\n");
fclose(out);
rename("..config.tmp", name);
return 0;
}
/* Allocate initial growable sting */
struct gstr str_new(void)
{
struct gstr gs;
gs.s = malloc(sizeof(char) * 64);
gs.len = 16;
strcpy(gs.s, "\0");
return gs;
}
/* Allocate and assign growable string */
struct gstr str_assign(const char *s)
{
struct gstr gs;
gs.s = strdup(s);
gs.len = strlen(s) + 1;
return gs;
}
/* Free storage for growable string */
void str_free(struct gstr *gs)
{
if (gs->s)
free(gs->s);
gs->s = NULL;
gs->len = 0;
}
/* Append to growable string */
void str_append(struct gstr *gs, const char *s)
{
size_t l;
if (s) {
l = strlen(gs->s) + strlen(s) + 1;
if (l > gs->len) {
gs->s = realloc(gs->s, l);
gs->len = l;
}
strcat(gs->s, s);
}
}
/* Append printf formatted string to growable string */
void str_printf(struct gstr *gs, const char *fmt, ...)
{
va_list ap;
char s[10000]; /* big enough... */
va_start(ap, fmt);
vsnprintf(s, sizeof(s), fmt, ap);
str_append(gs, s);
va_end(ap);
}
/* Retrieve value of growable string */
const char *str_get(struct gstr *gs)
{
return gs->s;
}